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Difference between boxer and berdan primer

Discussion in 'Firearms' started by spathatos, Jun 20, 2011.



  1. spathatos

    spathatos Seeker Seeker

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    This question is starting to come up more and more as people continue to buy more bulk ammo. Here is the answer to the difference between boxer and berdan primers.


    Berdan primers have the anvil located in the center of the primer pocket and have either 2 or 3 peripherally located flash holes in the primer pocket.

    A Boxer primer has the anvil located within the primer cup. The brass has a central flash hole inside of its primer pocket through which the flame from the primer travels.

    A Berdan primer does not have an anvil located in the primer cup. The anvil that the pellet is crushed against is located inside cartridge's primer pocket with flash holes on either side to allow the flame to propogate through.

    Both types of cartridges (berdan and boxer primed) are reloadable and you can purchase primers for either. The Berdan is, for obvious geometric reasons, more difficult to reload on a standard press. However, there is no reason that they cannot be reloaded if you so choose.

    Here is a comparison of the primers:

    http://www.three-peaks.net/berdan.jpg

    Note: the type of primer is not always indicative of corrosive or non-corrosive powders.
     
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  2. Eat Beef

    Eat Beef Gold Member Gold Chaser

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    Good luck finding berdan primers in the US. A buddy of mine loaded several thousand a while back, with primers he picked up several years ago. Berdan primers just aren't available here anymore.
     
  3. spathatos

    spathatos Seeker Seeker

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    yeah and they are very hard to reload anyways (to the point they are not worth it). Just an informational post.
     
  4. ONG

    ONG Seeker Seeker

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    Is there any reason that there are 2 types of primers? Is one supposed to be superior over the other?
     
  5. SilverCity

    SilverCity Gold Member Gold Chaser

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    Boxer primers were invented by a Brit, and Berdan primers by an American. Go figure...

    I don't see any advantage of one over another other than reloading difficulties and component availability of Berdans.

    SC
     
  6. electric-amish

    electric-amish Seeker Seeker

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    I thought that cases that used berdan primers were not reloadable.

    I could be wrong but the bottom of the case inside looks different.

    E-A
     
  7. SilverCity

    SilverCity Gold Member Gold Chaser

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